Device and method for on-line adaptive selection of baud rate and carrier frequency
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United States of America Patent
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Mar 22, 1994
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N/A
app pub date -
Jul 29, 1991
filing date -
Jul 29, 1991
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Abstract
Optimal baud rate and carrier frequency for data transmission using a modem on a communication channel (100) are determined by utilizing an on-line line probing technique. The technique utilizing the information from a decoder noise power spectrum estimated from the equalized received modulated signals and decoder output symbols to determine the decoder signal-to-noise ratios (SNRs) and supported bit rates for the available baud rates and carrier frequencies. These SNRs and bit rates together with a band edge SNR difference at each frequency band are utilized to select (110) the optimal baud rate and carrier frequency.
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